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c. 1 BURDICK CHANGE PAYING DEVICE Filed March 15, 1928 15 Sheets-Sheet l ATTOR/YZ'Y NOV. 24, 1931. c, BURDlcK 1,833,558

CHANGE PAYING DEVICE 'Fi'led March 15, 1928 15 Sheets-Sheet 2 Ma i/v70? C! Z. 5060/6;

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CHANGE PAYING DEVICE Fil ed March 15. 1928 15 Sheets-Sheet 4 Awzwrox 6? 1 506.0 34

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CHANGE PAYING DEVICE Filed March 15. 1928 15 Sheets-Sheet 5 NOV. 24,1931. 1 BURDICK I 1,833,558

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Filed March 15, 1928 15 Sheets-Sheet 6 6 Z. fiaep/c/g 1 av v ATTORNEY NOV. 24, 1931. c, BURDICK 1,833,558

CHANGE PAYING DEVICE Filed March 15" 1928 15 Sheets-Sheet 7 //V VIA/7'0? 01. 50/90/09 C. L. BURDICK CHANGE PAYING DEVICE l5 Sheets-Sheet 8 Filed March 15, ,1928

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CHANGE PAYING DEVICE Filed March 15 1928 15 Sheets-Sheet 9,

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CHANGE PAYING DEVICE Filed March 15 1928 15 Sheets-Sheet ll Nov. '24, 1931. c. L.. BURDIQZK CHANGE PAYING DEVICE Filed March 15, 1928 15 Sheets-Sheet 1?,

Nov. 24, 1931. c. L. BURD ICK 1,333,553

CHANGE PAYING DEVICE Filed March 15. i928 15 Sheets-Sheet 15 Mam wzmwww Mme: 4470mm Jaw 65%? $1 m 1222 [WI/6% Nov. 24, 1931. c, BURDICK 1,833,558

CHANGE PAYING DEVICE Filed March 15, 1928 15 Sheets-Sheet l4 //V V! /Y 701? a Z. 5.0/1? 9 l ra/Mir NOV. 24, 1931. c, BURDICK CHANGE PAYING DEVICE 1928 15 Sheets-Sheet 15 Filed March 15,

Patented Nov. 24, 1931 PATENT OFFICE CHARLES LAURENCE BURDICK, OF LONDON, ENGLAND CHAN GE-PAYING DEVICE Application fil ed March 15, 1928, Serial No. 261,998, and in Great Britain April 12, 1927.

- Coin paying machines in which the coins ejected represent the chan e from a given tender in respect of a sale 0 the value of the keys struck have already been proposed.

' Machines of this type have also been proposed which were capable of giving the correct change in respect of more than one tender.

The range of operation possessed by such machines has, however, been limited to two or three tenders, not only from theoretical reasons based on systems of coinage, but also by reason of considerations of bulk and complexity and the modes of operation proposed have been unsuitable for operation over the complete range of tenders and sales possible'within the limits, for example, of British coinage up to tenders'ot 1.

The present invention has for its object to D u a provide a change-paying machine of the subtracting type ofpracticable bulk and complexity and capable of operating 1n response to a simple intellectual rule on the part of v the operator in respect of any tender up to a hi h denomination such as 1. and in respect of any sale down to the smallest coin such as a farthing, i. e. to provide a universal change-paying machine.

It is therefore an object of the present invention to provide a machine of the subtractins, type in which a single tender stop. is ap plicable in the case of more than onetender.

his a further object of the invention to provide means to set the machine to give correct change in respect of a multitude of tenders covering the ranges between the values of any two tender stops.

In accordance with the invention the machine includes two keyboards, one comprising a set of keys hereinafter referred to as stops for operation in accordance with the tender, and the other COIIIPIlSlHgIL set of keys to be operated in accordance with the sale; the machine is generally worked by the operator (except in the case of a very small number of unusual tenders) according to the simple rule that the tender stop required to be operated is that of the smallest coin or plurality of like coins in the tender;

' The machine is thus designed in accordance with the usual fact that change given from any tender is less than the smallest coin tendered, otherwise the smallest coin should be handed back to the purchaser and the payment taken from the remaining tender.

It is'thus a further object of the invention to provide means to set the machine to give correct change in respect of a given tender on actuation of the tender stop for the smallest of a plurality of coins tendered, and of keys to the amount of the sale. I

Further objects include the provision of means to include a note in the change ejected, and means whereby the machine is combined with a cash registering mechanism, the change-paying mechanism being normally disconnected therefrom but being automatically connected operatively therewith when any tender stop is actuated.

- These and other important and diverse objects will be made clear in the following description and set out in the appendant claims.

The machine will be described primarily with reference to British coinage, a note be ing added concerning its adaptation to United States of America coinage at the end of this specification.

In accordance with the preferred form of the invention the whole range of coinage is regarded as comprising four denominations, for example, pounds, shillings, pence and farthings, and the sales keys when actuated according to their simplest mode of action are arranged to set ejectors to deliver change from a unit of the next higher denomination. For example the farthings keys are set to deliver the complementary number of farthings to make up a penny, the pence keys the correct change from a shilling and the shillings keys the correct change from a pound.

Specific keys are not provided for 0 pence, nor 0 shillings, but to cover the maximum range where, for example, a pound is tendcred for a farthing sale, auto-bars are provided according to which when a farthings sales key is operated and no pence key is operated, an additional 11 pence is thrown out by theejectors, and when a pound tender stop is operated but no shillings sales key 30 xis ehminated from the change.

is'depressed, 19 shillings is thrown out by the ejectors.

Excluding for a moment tenders which in clude one or more half-crowns, it is thus comparatively simple for example when the tender is a penny or any number of shillings plus a "penny, (in which circumstances only the penny tender stop is operated), to arrange that the 'ejectors in respect of" coins higher than a penny are inhibited,---so-that whatever sale'sikeys" (tothe. full. amountof the sale) are depressed, only the" farthings sales key operates tothrow out .thechange from the odd penny in the tender. Similar ly, where the smallest coin tendered is one shilling, all the sales keys higher than pence are inoperative and the pence keys, or the pence--a11d the farthingskeys throw out the changefrom the-shilling.

iAt this point, however, it should be noted thatfif the depression ota sales key for a penny throws out ll -pence and'i'or a far-thing :"throws out three-fa1things, the'operation-of bo'ththese' keys together will throw out 11 d.

"instead of 10%d: whichis the normal change for 1 4d. from a shilling; and in such case I provide automatic means whereby when sales keyshf two 'denominations' are operated togethe'r aunit (1 penny in the case considered) Obviously a= similarrequirement must be met whereby shilling is elimin ated when a shillings key and a pence key,or a shi-llings key and a farthings key, are operatedtogether. A tender whichincludes Gd; or as. the smallest coin-isnaturally provided for by --e'liminatin'g tid. or9df'from the normal action ol the pencean'd farthings sales keys.

=Where the smallest coin tendered is a'florin if thesales"keys'actuated include an even=number ofshillings or no shilling at all, an auto ban-throws out a shilling in addition to thenormal change of the pence sales keys whiclfi'function in their'usual manner. 7

Turning now 1 to tenders which include .ghalt-crownal provide two tender stops, one f-o-r even numbers of half-crowns and the other"'for odd numbers of halt crowns. "The ftender-ot evenhalf-croivns isa; tenderof .50'*5/'," 1O/', 15/, or .The sales l amountmust lie -between'2/ and 4/, or and 9/, orf12/--andl4l/ or'1 7/- "a-nd f1i9/,=plus possible pence and far'things, and the-change must lie in each of the four cases considered between2/5 duand l d.

In the case of a tender of even half-crowns, the machine, is arranged that when. the sales keys: operated lie between the ranges mentiojned; the. action oi the coin tubes holding the coins of higher denomination than one shilling"isfinhihite din which case the ejectorsfof'the remaining tubes throw out three a separate shilling pieces, two shillings or one shilling, being the difference in eachcase be 5 tween the amount ofj'theshillingssales key depressed and the multiple of 5/- comprised in the tender, a shilling of this amount of change being eliminated in the ordinary way therefrom when a pence or farthings key is also actuated. This operation is made possible by suitable selection of the constituent coins makin up the maximum change of ?f19/-'-'in the-shillings denomination.

Simi1ar1y,'the 'tender'stop for the odd half- "crowns connotes a tender of 2/6d., 7/6d., 5 12/ 6d.-,-'or 17/6d. A s'thapence sales keys normally give the correct change for 1/, the odd.-'slaalffcrown tender stop is arranged to work an auto-bar which normally throws out -a --supp=le'mentary shillingend *sixpence. I Thus when .21 pence or farthings sales key is 'operated','or a 1/ 6/ ,11/-' 'or'16/ sales "key without pence, the correct change is thrown outc'omprising 'l/6ds added to the "normal change from 1/- which is ejected thep ence'k'eys, or l /Gd. alone. If, how- 1 evcrfa-j pence .or farthings sales key is depressed in'conjunction with the 1/-, 6/, 11/ or 16/ sales key, a shilling oi lthe "176d: otherwise thrown out bythe' auto-bar isinhibited, and when the sales. amount is "2/, 7/-, -12 -0r17 plus a fraction of pence or"farthings,'the remaining 6d. of the amount thrown out by' theauto-bar and alu'rther (idffrom the normal change of the, pence or farthings" key is inhibited. l

Thus the machin'e'is enabled to work in "accordance with' 'the usual combinations of coins offered in tender on the basis that a 7 single tenderstop is depressed corresponding to'the amount of-- the lowest coin offered in tender. i I y V The above givesan outline of the general nature of the invention, and I will now describe a. specific embodiment.

One embodiment of the lnvention is illustrated by way of example in theaccompdnying drawingsin which 1 Fig. 1. shows a side view, and Fig. 2 a plan eta. complete machine, v is :a sectional side 'view showing the. ejector mechanism and means to connect the saleskeys with the ejector devices.

:Fig; lvis-1a sectional; plan of the ejector "mechanism illustrated in Fig.

F-Figg5 lSra sectional plan-beneath the sales keys stems, and Fig. -6'is' a' sectional plan on'a higher; plane than"Fig. 5, and: illustrating' inhibitor mechanism operated by the :tenderstopsg I i L'Fi'g. -7:is an elevation showing re-setting mechanism, and a f "Fig.*8' is an elevation of certain'ot the mechanisms illustrated in Figs. 5 and 6.

Figsf'9 to 23, ,andFig. .26 show various *viewsof details. l i v i i Flg.24l shows the arran'g'ement cipal functions of the sales keys.

Fig. showsfparticulars of thercoins and printhe rows.

coins are carried in two sets of coin ejected as change when the various sales keys are operated, and L 27' shows an alternative arrangement of sales keys in respect of American coinage.

Turning first to Figs. 1, 2 and 3, the rac'nine comprises a series of tender stops M and a set or sales keys N, there being a separate key for each integral number of pounds, shillings, pence andlarthings up to 1. The tubes 0, 0 the first set holding coins up to the value of 6d, and the second set higher denominations. In addition, a set of clips 0 Fig. 3, is provided for 10/- notes. The coin tubes are tel .scopic and'the coins are urged upwardly in the tubes by spring means, the uppermost coin being ejected when appropriate by means of generally similar ejector levers P, shown separately at Fig. 16, which oper ate horizontally-arranged ejectors to throw the coins into a central chute Q. The coins are held in by hinged stop plates R which carry pivoted stops 55 adapted to fall and prevent movement of the ejector levers P when the last coin has been ejected, or it the coins janib and are not pushed up by the springs so that the lug S carried by the stop S is no longer supported thereby.

is shown more particularly in Fig. 3, the

levers P are mounted on transv-rsc shz'rl'ts 10, and have dmvnwardly extending tails such as P articulated to the levers by pivots 11 running transversely to the shaft 10 and normally held in alig: ment with the levers by springs 12. The tails are adapted to he L engaged by hook-shaped members which may be termed ejector hooks eacn controlled by a spring of which one is shown at 130 in Fi 4:, and loosely articulated at 14 to two series of links 15 correspond g to H e two rows of ejectors required by the two rows of coin tubes 0, 0 the links being rigid with two shafts 16,1? geared together by the gears 18, 19, and operatable by the handle 9.0 to move the ejector hooks outwardly oi The positively-actuating faces 130 of the ejector hooks are norn'ially clear of the tails P a shown in Fig. l, but owing to the loose articulation of the ejector hooks with the links 15 they are capable of being rocked to the right in Fig. 4 shown in dotted lines in the case of the left hand hooks) to lie behind the tails on the actuation of their respective sales keys l after the latter have been 'uied by operation of a tender stop. Return lugs 13 are provided the hooks 13.

The coupling of the sales keys which attached to the shafts 32, 33 respectively. Each tender stop operates a separate lever such as M, and each le engages one of the bars 34, 34. Tender stops for 551., 10/ nderen half-crowns arm all the sales keys, it the other tende stops only arm the pence nd iarthings keys.

t will be seen by comparing Fig. 2 and i -l that bar is arranged opposite the 'ig'ht hand six'stops and bar 34a opposite (llO 1., ]0/- and even halfcrowns stops. If one of the latter actuated, its lever rocks both shafts, but when the other stops are actuateo only shattis rocked.

The coupling of" the s les keys is eli 'ected by means of two pairs of sliding bars T, 'l, the bars T 'being partly offset vertically and lying partly over the 'i as shown in The bars and 'l." are both moved by links 31 when the outer shaft 33 is rocked but the bars 1 only are moved by links 30 when the inner shaft 32 is rocked.

The bars -arry inclined slots 35, Fi I 1-, in which are arranged pins 36 carried by four sliding" rods 37 on which rn tiuntcd cam-shaped members 38, of which one is proviled in conjunction with each sales key. The ea1n-shape l nieml pi s 39 mounted on the r ls ll", N N of th as keys ll whenever the latter are do- ;u Normally the cam-shaped members 3 rock idly. the lower ends oi. the rods N N. N merely actuating cash register mechanism, but when the sales keys are required to be couph l bars '1" or T shitt the corresponding rains 38 to the right in Fig. 1-, and the cams so shifted a: lliCll positioned opposite finger bars o0 which one is or vided in conjunction with each sales key, and the depression of a sales key and rockii oi a cam I the corredicated at ll, U Fig. l-, and they are moved transversely by the lugs 51 wu-on bars 50 are operated to perforn the usual function of selector bars in coin-paying machines,in this case by rocking the appropriate ejector books 13 to the right in Fi For this purpose they are provided with slots 52o, F lg. 18, in their upper edges which receive all the ejector hooks corresponding to each particular series U or U the left hand wall of the slot being close to the left hand face of the ejector hook in the case of those ejector hooks which has a particular selector bar is designed to operate.

38 are rocked by 11d.- in case of need.

. As already explained, the actuation of a coupled sales key operates normally to eject the complement of thesalesamount from unity 'of the next higher denomination. Thus 5 the selector bar operated by the 19/- sales key. rocks ejector hoo rs corresponding to 1/ of the cointubes, and the 1/ sales key operates a selector bar which rocks hooks corresponding to 19 of the coin tubes. Simil- 'arly, the penny sales key operates ejector hooks correspondingto 11d. of the coin tubes and the farthing sales keys operate the complement of a penny. g I

In order to meet the case of a higher tender 15 such as a pound for a small sale such as a lever l bears against a pin 50M in a barv 50a, Figs; 3 and 4, which is generally similar to and lieswith the series of finger bars 50 operated by the sales keys. The bar 50a operates a selector bar which I call an auto-' bar'in the series U so that whenever the tenderstop for 1. is depressed the aforesaid '19/- auto-bar deflects into their operative positions ejector hooks 13 corresponding to 1.9/ of change.

The supplementary 11d. thrown out by the farthings keys is provided for by mechanism which I call grid Fillustrated in Figs. 5, 7

40; and 9. As here shown, grid F comprises three I arms 62, 63, 64 terminating in blocks which lie below the three farthings sales keys respectively, but are set a little to one side in normal position of the machine. Thethree arms are'rigid with a shaft 65' capable of sliding to the left hand in Fig. 5, to the position shown in dotted lines, and the shaft is so moved to the left by means of a pin 66 lying in an inclined slot 67 formed by a sprin'g member 68 carried by a sliding bar 69 adapted to be moveddownwardly in Fig. 5 whenever any tender stop is depressed, by means of leveri70, Fig. 7, solid with theshaft 32. Atransverse slot 67a leads from the upper-end ofslot'67fand communicates with a. return slot: 67?) for scribed. r

The grid F, however, is normally in inoperative position in order to leave the fartha purpose to bedeings sales keyswithout effect ontne changegiving mechanism whenthe device is being usedsolely as a cash register.

hen grid F is in the operative position shown in dotted lines in Fig. 5 and any far- 135 things keyis depressed, the shaft is rocked and links 72, 73, 7d operate a bar 50?), similar to the fingerbars, which operates an auto-bar in the series of selector bars U to deflect ejectorhooks' corresponding to 11d. of the coin tubes. Thus if a pound is tendered for asale of less than a penny the first auto-bar will operateejector hooks for 19/, the second auto-bar ejector hooks for 'lldpa'nd'the far things key will operate ejector hooks for its normal change from 1 penny.

As the auto-bar for 19/'is to operate only in the case of a sale including nocomplete shillings, it requires to be unset if a shilling sales key is depressed. This is provided for by cutting in the bottom ofbar 50a, shown in Fig. 8, a slot 500, which is shown dotted in Fig. 7 as the bar for 19 lies exactly behind the bar 50?) for automatic 11d. which is there illustrated in full elevation. The slot coopcrates with a pin 50h carried by a bar 5010 at the top of a rocking lever 50d linked to a further lever 50!; solid with'a shaft 75. The

shaft .75 carries a second lever 506, Fig. 5, at

its opposite end, and between these two levers are arranged two bars 509' which lie under the two rows of shilling sales keys. 'VVhen the barv 50a is moved forward by the pound tender stop, the bars 509 are raised to the position shown in dotted lines in Fig. 'Zwhere they-lie immediately beneath the lower ends of theshilling sales key rods N Thus if any of theshillingsales keys are thereafter depressed,.the levers 50c will be rocked to their lower position, and the bar 50a will be returned by pin 50k to its inoperative position and will unset the 19 auto-bar. This unsettin g mechanism 1 call g id H.

The unsetting of grid F (which when setis liable to actuate the 'll'd. auto-bar) is effected by apparatus which I call grid G comprising a bar 80, Fig. 5, arranged beneath the lower ends of the pence key stems N and carried by arms 81 rocking about a shaft 82 under the controlof a spring 83. The end of the bar 80 nearest to grid F carries a downwardlyextending cam 5, 7 and9, and when the bar 80 is de ressedby any of the pence finger keys the cam 8% slides.

shaft 65 ofgrid F back to its unset position, this being rendered possible by means of transverse slot 676; l ading out of slot 67 even though bar 69 (which is set by operation of any of the tender stops) remains in the setposition, The pence stems N operate grid G the moment they are depressed, the corre I spending initial movement of the farthings stems being idle for the necessary period. I

In order that when for eXa-mple'a pence a farthingg sales key requireto be deessed together, a penny shall be eliminated from'the sum of the normal change thrown out by a pence ales key and by farthings sales key. If, for example, a sale is for 1%(1. and if the penny sales key sets ejectors" to throw outlld. and the halfpenny sales key 1: Luv

an ejector to throw'a d. "a penny must be eliminated for the combined actions to throw out 1O d. instead of the sumof the amounts noted, and the mechanism for this feature Fig. 10, having inclined faces a on opposite sides, and the rows of keys are arranged between spring-centrolled rods 90, 91, 92, 93, 94, 95,- 96"capable of sliding laterally of the machine through holes in end plates as clearly shown in Fig. 6.

Rod 96 carries three lugs or rollers 96a adapted to be engaged by the cam faces n farthings keys N 4 so that the rod is moved to the left inFig. 6 when any farthings key is depressed. Similarly, rod 94 is adapted to be moved to the right when anyof the pence sales keys is depressed. Articulated to red 96 is a triangular member which I call rocker C, the member having an abutment face C adapted to be engaged by a pin 94?) on red Articulated to the third corner of rocker C is a rod 97 extendingto the rear of the machine and articulated through a bellcrank lever to aspring-controlled inhibitor finger 98 lying adjacent the tail P? Fig. 6,0f theejector lever operating with one of the penny coin tubes. 1 rod 96is moved to the left'in 6 by the depression of a farthings key, the joints of rocker C are sufficiently loose for no operative action to be made by inhibitor finger 98; but if simultaneously with the movement of rod 96, rod 94 also moves to the right bythe simultaneous depression of a pence linger key, stud 94?) will engage the abutment face C of rocker C which will be operatively rocked and will cause inhibitor finger '98 to rock the tail P of the ejector lever P of one of the penny coin tubes away from the operative face 13a of the corresponding ejector hook, Fig. 1, so that although theejccter hook remains set it cannot operate the ejector lever when actuated by the handle 20 as will be later described;

Rocker B, Fig. 6, operates in a similar manner through bars 97a, 9??) and inhibitor finger 122 to eliminate a shilling by rendering in.- operative the ejector lever P of a shilling coin tube whenrod 96. is moved simultaneouslywith either of rods 91 or 93 which are actuated by the shillings sales keys in a manner similar to the operation of the rod 94, and which carry studs 91b, 936 respectively for the purpose of rocking rocker B.

Rocker A operates in similar manner, to

eliminate a shilling when a pence sales key and a shillings sales are depressed together. It is articulated to rod 95 which is'moved to the left by any of the lugs 95a and is operated by studs 91?) and 937) as inthe case of rocker B. Rockers A and B operate on the same ejector lever tail P so that when both rockers move, only one shilling is eliminated.

The arrangement of the tender stops and their general function 18 illustrated in Fig. 24.

It has already been noted that the depression of any of the three higher value tender stops will couple all the linger bars by means of the bars T, T but the operation of any of the remaining tender stops will only couple,

the finger bars for the pence and farthings keys through the movement solely of the bars T On depressing the 1. tender stop, therefore, all the sales keys are operatively coupled and the auto-bar is operated to set ejector hooks for 19/ change. Similarly the 10/ tender stop arms all sales keys and operates an auto-bar to set ejector hooks. It is however, obviously necessary to inhibit 10/' from the change ejected in the ordinary way by the linger keys, and for this purpose the 10/ tender stop is coupled to an inhibitor bar 100, Figs. 6 and 13, having a lug 101 which operates to deflect the tail P of the ejector lever connected with the 10/ note rack. The coupling comprises a stud 102 011 the inhibitor bar working in an inclined slot 103 in a rod 10% carrying a pin 105, Fig. 8, adapted to be engaged by the tender stop lever.

Operation of tender stop for 10/ therefore moves rod 101 upwardly in Fig. 6, and inhibitor bar 100 to the right so that the lug 101 deflects the tail P of the ejector lever for the note rack to the right away from the operative face 13a of the ejector hook.

Depression of the even half-crowns tender stop arms all the sales keys and inhibits all ejector levers for values over l/. This is effected through the rod 110 operated similarly to rod 104 and an inhibitor bar 116,

Fig. 13, which lies below inhibitor bar 100 from a pound tender is illustrated in Fig. 25,

and the inhibition of the higher values of the coin tubes has the effect of leaving only the three 1/ tubes capable of being operated when the sales keys shown opposite to them in the left hand column are depressed.

The odd half-crowns tender stop operates a lever M shown separately in Fig. 15, and carrying an attachment 117 so that two autobars may be simultaneously operated to set ejector hooks to deliver a shilling and a sixpence automatically. The operation of this mechanism is similar to the operation of the auto-bar for setting ejector hooks for 19/- operated from the pound tender stop as already described. As, however, the tender stop for the odd half-crowns and for lower 

